Phormium 'Tom Thumb' (New Zealand Flax) - New Zealand Flax cultivar that grows to 2 feet tall with slightly arching undulating 1/2" wide green leaves with red bronze margins and a dark mid-rib. Our smallest green flax. Plant in full sun to light shade. Can tolerate fairly dry conditions (coastal) but looks best with occasional to regular irrigation. Hardy to 15-20 F. Possibly root hardy below these temperatures but with severe foliage damage unless protected. Slightly larger, greener and hardier than the cultivar 'Jack Spratt'. We first received this plant in 1984 and have yet to see this cultivar bloom in our garden. Introduced by Mr. J. Burton of Hamilton, New Zealand.
This description is based on our research and observations made of this plant as it grows in our nursery, in the nursery garden and in other gardens that we have visited. We will also incorporate comments received from others and always appreciate getting feedback of any kind from those who have some additional information about this plant, in particular if this information is contrary to what we have written or if they have additional cultural tips that would aid others in growing Phormium 'Tom Thumb'.